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Patented Jan. 16, 1923.

UNITED STATES PATENT OFFICE.

ERASTUS E. WINKLEY, OF LYNN, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY CORPORATION, F PATERSON, NEW JERSEY, A CORPORATION OF NEWJERSEY.

Application filed December 31, 1919.

To all whom t may concern:

Be. it known that I, ERAsTUs E. VVINKLEY,

a citizen of the United States, residing at Lynn, in the countyi ofEssex and State of Massachusetts, have invented certain new and usefulImprovements in Stripping Machines; and II do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates Vto a machine for cutting sheets of material intopieces or strips by the repeated operation of its cuttinginstrumentalities, and is designed primarily as an improvement of thestock-cutting machine disclosed and claimed in applicants copendingapplication Serial No. 125,977, filed October 16, 1916, (Patent No.

1,412,225, Apr. 11, 1922) although the several features of the inventionare also applicable to other machines of this general class.

In Letters Patent No. 1,285,531, granted November 19, 1918, to thepresent applicant,

a method of making polygonal heels is disclosed which involves buildingup a multiple hee-l block by superposing on each other in steppedrelation a plurality of pasted strips of heel material of graded widths,the blocks thus formed being subse uently cut off into single heelblocks.

. he machine of the above mentioned Patent No. 1,412,225 is intended foruse in carrying out in part the method above referred to, the machinebeing adapted to progressively cut a series of strips or pieces ofuniform width from a sheet of heel material and to deliver said piecesin stacked relation in convenient form for subsequent handling duringthe multiple heel block assembling operation. In order to build astepped heel block comprising graded widths of strips or, in otherwords, strips which vary in width according to a predetermined plan, itis contemplated to provide a machine to cut the requisite number ofseries of uniform strips of the required graded widths, from which thecomponent graded strips are selected and assembled. The machine is alsoprovided with means to enable the operator to manually adjust or set itperiodically to cut several series of STRIPPING MACHINE.

Serial No. 348,561.

strips of different uniform widths as may be desired.

One of the objects of the present invention 1s to provide an improvedtype of machine of this general class which may be utilized to materialadvantage in practicing the methodset forth in Letters Patent No.1,285,531 already referred to, and which will obviate the necessity offrequent manual ad- Justments and consequent non-productive periods,incident to the use of the prior machine, and moreover which shall beparticularly adapted to easily and expeditiously produce a successivelike series of strips of the desired graded sizes or widths withreliability and economy of time and expense.

Accordingly, one featu-re of the invention resides in the provision in amachine of the above indicated character of automatic means which may bepreliminarily set in accordance with the specifications of the work tobe done, and which shall function after each operation of the cuttinginstrumentalities to automatically readjust certain parts of the machineso as to cause it to cut and deliver in stacked relation successive likeseries of strips of the desired graded sizes or widths.

Another object of the inventionis to provide means for eliminating wasteand preventing the cutting of defective strips that might result fromimproper feeding and positioning of the sheets prior to each cuttingoperation.

To this end, another feature of the invention contemplates the use of amechanism embodying a plurality of detectors for engaging the forwardedge of the sheet as it is fed and detecting any angularity between itand the cutting knife, under which condition the operation of themachine is discontinued through the action of an automatic trippingmechanism before the cutting action occurs and a defective strip isproduced.

These and other objects of the invention and features by which they areobtained will become apparentto those skilled in the art from thefollowing description of the preferred embodiment of 'the inventionillustrated in the accompanying drawings, in which Figure 1 is a view infront elevation of a machine constructed in accordance with the presentinvention; Fig. 2 is a similar view in rear elevation; with a portion,ofthe machine removec.; Fig. 3 is a view in side elevation of the machine;looking from right to left in Fig. l; Fig. 4 is an enlarged viewpartially in section and partially in elevation; of a portion of thefeeding mechanisms of the machine; Fig. 5 is a view in perspective of aportion of the main feeding mechanism; Fig. 6 is an enlarged plan viewof a portion of said main feeding mechanism; Fig. 7 is a view in frontelevation of a portion of said main feeding mechanism; Fig. 8 is anenlarged plan view of a portion of the left-hand end of the machine;showing particularly the left detector mechanism for detecting theangularity of a sheet fed to the cutting instrumentalities; saidmechanism being illustrated in an intermediate position; Fig. 9 is aview in front elevation of the mechanism shown in Fig. 8; Fig. 10 is aperspective view of said detector mechanism; looking from the rear ofthe machine; Fig. 11 is a plan view of a portion of the right-hand endof the machine; with a portion of the machine removed; and showingparticularly the right detector mechanism fpr detecting the angularityof a sheet fed to the cutting instrumentalities; and also a part of thetripping mechanism; the detecting mechanism being illustrated in anintermediate position; Fig. 12 iS-a view; partially in section andpartially in side elevation; of the mechanisms shown in Fig. 11; Fig. 13is a view in front elevation of said mechanisms; nig. lll is a view;partially in section and partially in side elevation; taken on thesection line 141-14 of Fig. 13; Fig. 15 is a perspective view of aportion of the tripping mechanism for the main driving clutch of themachine; said mechanism being illustrated in its released position; Fig.16 is an enlarged view in front elevation of the right-hand end of themachine; showing particularly the automatic mechanism for adjusting themachine to cut successive like series of strips of graded widths; aportion of the machine being shown in section for the sake of,clearness; Fig. 17 is an enlarged view; partially in side elevation andpartially in section; on the line 17-17 of Fig. 1; showing certain ofthe main operating cams and cooperating levers; Fig. 18 is a view inside elevation looking from right to left in Fig. 1; and showino1particularly the automatic adjusting mechanism; Fig. 19 is a plan view;partially in section; of the mechanism shown in Figs. 16 and 18; aportion thereof being removed for the sake of clearness; Fig. 2() is aview; partially in section and partially in side elevation; on the line20-20 of Fig. 21; and showing the transferring rocker in its raisedposition and delivering a strip to the receiving table; Fig. 21 is aView in rear elevation of the transferring rocker in its raised positionand showing the mechanism for adjusting the positions of the end stopsor gages; the detecting mechanisms being illustrated in their retractedpositions; and Fig. 22 is a view in reduced scale; partially in sideelevation and partially in section; showing the connections foradjusting the positions of the feelers.

Referring to the drawings; the stock cutting machine shown comprises thefollowing main parts which; with t-he exception of the main feedingmechanism; are substantially similar to the corresponding elements ofthe prior machine; and which include a stationary cutting bed forsupporting the stock during the cutting operation; a reciprocablecutting knife 32 for cooperating therewith to sever strips of thedesired width from the sheet of material operated upon; a main feedingmechanism embodying a plurality of feed dogs 34 for engaging the stockat a. plurality of points and feeding it step-bystep to the cuttinginstrumentalities; a plu. rality of end stops 36 for determining thewidth of the strip to be cut and against which the stock is fed; aplurality of supplemental. feed devices or pushers 38 which areautomatically thrown into operation tol engage the rear edge of thestock and eii'ect its actuation after the stock has become reduced inlength to such an extent that the main feeding mechanism is unable toadvance it; a pivotally mounted discharge table l0 disposed adjacent thecutting bed and on the advance side thereof for discharging the remnantend of a sheet of stock; a plurality of feelers 4t2 disposed on theadvance side of the cutting instrumentalities and adapted toperiodically feel of the stock to determine whether or not it is ofsuflicient width to enable a full sized strip to be cut therefrom andfor controlling the operation of the machine in accordance therewith; asupply table 44 disposed at the rear of the machine for supporting andprogressively raising a stack of sheets of material; a plurality ofsupply dogs i6 rendered operative upon the exhaustion of a piece ofstock being operate-d vupon to engage and advance the uppermost sheet onthe supply table into the region of4 operation of the main feedingmechanism; a receiving table 48 disposed at the front of the machine andbeyond and above the cutting instrumentalities for receiving thesuccessive cut strips in stacked relation; a transferring rocker 50normally disposed in a horizontal plane for supporting the successivestrips as they are cut and which is periodically rocked or rotatedupwardly into a vertical position to transfer said strips successivelyand deliver them to the receiving table; an edge guide 52 normallyresting upon the upper ends of the accomplishing end stops 36 forguiding the `forward edge of the sheet ofstoclr into engagementtherewith; and mechanism interconnecting the several end stops andfeelers with the receiving table in such manner that said table, endstops and feelers may be concurrently and proportionately adjusted inadjusting or setting the machine to cut strips of different widths. i

The machine also comprises the followingl new parts7 which have beenincorporated into the earlier machine for the purpose of the resultshereinbefore stated, .and which include an automatic adjusting mechanismembodying a travelling carriage 56, a ratchet 'and a plurality ofoperating pawls 60 and 62 for the purpose of. automatically andprogressively adjusting the `height of the .receiving table 48 andconsequently of the connected end stops' 36 and feelers 4t2 after eachcutting operation in order to vary the width of the next succeedingstrip cut, and to produce a series of strips of predetermined graduatedwidths; a detecting mechanism embodying a plurality of detectors Gil and66 positioned slightly in advancev of the outermost end stops to beengaged by the forward edge of the stock it is fed in order to determinewhether the forward edge of the stock is in parallelism with the cuttingknife or whether there exists an angularlity between them; a trippingmechanism including a release plunger 68 for automatically releasing themain clutch of the machine and thereby disconnecting it from the sourceof power whenever said detectors determine an existing angularity; and adetector retracting mechanismembodying an` actuating rod 70 fortemporarily retracting the detectors from engagement with the forwardend of the stock and thereby preventing any possible baclr throw orrebound thereof prior to the cutting operation.

i Inasmuch as the component elements, with the exception of the mainfeeding mechanism, of the main body of the machine correspondsubstantially to similar parts of the prior vmachine and form noA direct`part of the present inventiomeicept they perform certain ynecessaryfunctions in the operation of the machine as a whole, only a brief andgeneral description of these common features of the machineI will begiven, reference being had to the copending `application, above referredto7 for a full and detailed description thereof if desired. The mainfeeding mechanism, however, of the present invention is a modificationand iinprovement of the feeding` mechanism of the earlier machine `andtherefore will' be fully described. Y v i Referring to the drawings, thesheet vmaterial orsto'clr is cut by means of the co-operative action yofthe stationary cutting bed 30 andreciprocating ciittiiw vi knife ismounted on a horizontal f. beam. 72 (Figs. 192,3 and 20) which is g c atits ends by the side frames 74 and the machine in a well-known manner,and which is reciprocated by means of rods 7 8 that connect its endswith cranl-z pins 8G that are associated with crank disks 82 on the endsof a main cam shaft Sfr of the machine. This cam shaft is provided withgears 3G which mesh with pinions 8S on a main power shaft to whichv apulley 92 issecured, by means of which the machine may be connected withany suitable source of power. The pulley 92 connected with the powershaft by means of a. clutch (not shown) of `any ordinary or suitableform, thus clutch being controlled by a handlever 94k (Figs. 2 and l5)so that the machine may be conveniently started and stopped.

in the path of ythe reciprocating cutting ltnire and isrelativelynarrowinwidth to permit the waste or remnant pieces at theforwad and rear ends of the sheet of stock to be discharged downwardlyon either side thereof either by gravity or by means provided for thepurpose. 4

rlhe sheet of stock is fed horizontally between the cooperating cuttinginstrumentalities, and the width of the strip which severed isdetermined by the engagement of .its forward edge with `the. end. stops3G. luring the feeding movement, the stock is supported (Fig. 4t) partlyupon a stationair).y horizontal table 96 and partly upon the dischargetable i0 which normally forms a horizontal extension thereof, and whichis pivoted to the latter on a transverse rod 98 so that it may be swungdownwardly at proper times to discharge the waste rear end of the sheet.

rThe mechanism for feeding the sheets of stock,` although performing afunction similar to that of the corresponding mechanism in the priormachine, differs somewhat in construction and mode of operation andtherefore it will be described in detail. This feed mechanism comprisesa plurality of spaced and toothed feed dogs-34C (Figs. 4,'

6 and 7) that are pivotally mounted at the inner ends of a plurality offorwardly extending' arms .100 4that constitute integral parts of across-beam 102, the ends of which provided with lugs 104.- by means ofwhich it is pivotally connected to proj cting;` lugs 106' extendinginwardly from a plurality of slides 108 that are adapted to travel in ahorizontal plane in guideways 110 constituting a part of the side framesof the machine. The respective endmost feeddogs vSil are. spacedinwardly from the slides a material distance in order to avoidengagement with the ragged edges of the iso

